Skillet-making machine.



R. W. THOMPSON, JR.

SKILLET MAKING MACHINE.

APPLICATION FILED JULY 22,,1912.

Patented June 16, 1914.

3 SHEETSSHEBT 1.

\X/Eesses PLANOGRA R. W. THOMPSON, JR. SKILLET MAKING MACHINE.

APPLIGATION FILED JULY 22,,1912- 1,099,950. Patented June 16,191;

3 SHEETS-SHEET 2.

WEE

. z ima R. W. THOMPSON, JR. 7 SKILLET MAKING MACHINE.

APPLICATION FILED JULY22,1912. 1,099,950, Patented June 16,1914,

3 SHEETS-SHEET 3. v

w IFN VVITEBEEE E51 5 my d 5'1" v I COLUMIIA PLANOGRAIH (10.,WASHINGTON, D- C- RICHARD WALKER THOMPSON, JR, OF KENDAL, ENGLAND.

SKILLET-MA KING MACHINE.

oaaeso.

Specification of Letters Patent.

Patented June 16, 1914.

Application filed July 22, 1912. Serial No. 710,924.

To all whom it may concern:

Be it known that I, RICHARD VVALKER THOMPSON, Jr, a subject of the Kingof Great Britain, residing at Kendal, in the county of Westmoreland,England, have invented certain new and useful Improvemens inSkillet-Making Machines, of which the following is a specification.

This invention has for its object improvements in machinery for makingcartons or skillets as they are termed in the trade, namely, cardboardboxes before they are folded up, so as to form a box. These cartons orskillets are sent out absolutely fiat, and are usually formed into boxesby the firm supplying the contents, which are sold in such boxes. Inmaking these skillets, the favorite plan is to cut the blanks, first,and then pass these blanks through scoring, slotting, folding, andgluing machines, and sometimes printing also. By my invention however,the cutting ofi is the last part of the process, the entire process ofmaking the skillets being carried on before one skillet is cut off fromthe next.

The invention is best described by aid of the accompanying drawings, inwhich Figure 1 is a vertical sectional longitudinal diagrammatic view ofmy apparatus; Fig. 2, a side view of the same; Fig. 3, plan View ofsame; Fig. 4, side view of one part of the bed. The small figures ateach end are cross sections of the ends of the bed. Fig. 5, plan view ofsame; Figs. 6 and 7 diagrammatic views of the motion for giving theintermittent motion; and Fig. 8, view showing detail of cross scoringmechanism.

In these A is a supply roller carrying a Web of cardboard rolled upthereon, and having usually any ordinary friction device not shown inthe drawings, to prevent unrolling more than is required. This band asit unrolls can if desired be passed through a printing mechanism of theusual type. This is not shown in the drawing, as there is nothing new init, it being very common to print from a roll of cardboard or paper inthis way before it is cut up into skillets or the like. Very frequentlyskillets however are not printed by the manufacturer, and the presentmachine is designed for making such skillets. The band a now passesbetween two guide rollers a and from thence under a plate B. Against theband under this plate are scored rollers B whereby cross scoring ismade; This cross scormg is effected by the revolving cutters B beingcarried on a stirrup b on a lever I) worked by a cam b reciprocating ona fixed center 6 and driven in any desired manner from the-reciprocatingmechanism hereafter described through intermediate shaft T. The bandpassing this mechanism now comes under the roller D, and between it andthe longitudinal scorers d. Where these longitudinal scorers are used toscore continuously they are as set forth in the drawing. The web passingon from the scoring wheels, (and there may be several wheels abreast orone following the other,) passes under the usual punching, or slottingdevice E, which punches the slots 6, shown clearly in Fig. 8. Theseslots usually bridge over two skillets half the slot being in oneskillet, and half the other. It is obvious, however that these slotscould be efiected on the same shaft by cutting rollers, male and female,on the same shaft as scoring cutters (Z if desired. From here the band apasses between rollers G, R and V and from here on the band is deflectedso as to take a curved or switch-back path. The roller R is a jockeyroller and by pressing it down by any desired mechanism it takes up theslack when the skillets are in length not an aliquot part of thedistance between T and T, Fig. 2. The band of cardboard now passesbetween the rollers H H the lower one of which revolves in a glue tankIt heated by a gas flame or otherwise h. The lower roller H is of suchwidth and in such position as to gum or glue the edges to the exactshape required to form the skillet. From here it passes between slowlyfolding over blades or beds I I, whereby the skillet is turned around soas to form a complete ring with the edges coming against each other atthe glued portion. This bed is shown in greater detail in Figs. 4 and 5.By this time the glue is tacky and easily sticks. Instead of employingthe gluing device for joining the edges of the skillets a stitchingapparatus may be used, the anvil 70 being employed also for thatpurpose.

In order that the width of the skillets may be varied, the beds Iadjustably mounted on the guides M and I have an arrangement for holdingthe web down to the beds so as to insure the proper folding. Thisarrangement comprises two hand wheels Z each turning two screws Z, Zgeared together, which move two presser frames Z l nearer together orwider apart to correspond to the beds. The beds may even be connected tothese presser frame arrangements so that the beds could be adjusted atthe same time. The bed can be of leather at this point, or othersuitable material, and be held firmly by guides M M. Roller L and rods LIi together with the resistance of the skillet regulate the exactcontour of the bed at this point.

The object of having the switch-back bed is this.-I have found that whenthe web is turned over, if the bed be in a single level plane the edgesare so stretched at one point over another that they are very apt tocrack and break off at the transverse scoring, but if the web at thesame time that it is being rolled over as it were takes a circular orother bend which makes the diameter of curvature of the edge less thanthe diameter of the curvature of the middlepart, this straining isentirely obviated, and instead of a great and prejudicial strain beingbrought to bear on the traveling mechanism, and the resultant tearing atthe cross scoring, the movement is very easy, and no tearing results.Beyond this point I place two pairs of rollers N and O geared together,and arrange the' pair of rollers O to be driven from an intermediatemotion in the following manner. From a crank pin it, is a connecting rodt This by suitable links 25 drives the pawl t intermittently, and thisworking on the ratchet wheel t revolves the axle t and with it thepulley t which drives the roller 0, consequently when the pawl is movingback over the teeth there is no movement, but only when the --pawlengages the teeth. These parts are better shown in Fig. 6,. In Fig.-6'there is a disk t fixed on the shaft 25 This disk is cut away atparts to allow the pawl 25 to engage in the teeth of the ratchet wheel15 When however it comes away against the uncut away portion of the disk"the pawl being made broader than the teeth so as to pass over the disk,is kept out of gear by the disk. The distance at which it is kept out ofgear can be increased if desired by moving'the disk t radially forwardin the direction of the arrow around the ratchet wheel 6 and clamping itthe required position by the set screw t which passes through a :slot'inthe plate 25 The pawl t riding on the disk t WhGI'BflOt cut away isshown clearly in Fig. 7. While the pawlhas been riding over the teeth,and consequently the web has remained stationary, the scoring devi es,and the guillotine device hereafter described are actuated, their camsallowing them to remain .out of gear at-other times. Continuing on theWeb arrives at the guillotine P, shown best in Fig. 1, whereby theskillets are out off. Iv have mentioned this intermittent i1notion beinworked by two pairs .of roller-is,

ihut itis. vious that otherwelllmown forms of pulling mechanism, such astentering clips, can be adopted to be brought into action by cams, sothat the clips shall intermittently clip the band, and carry it forwardthe exact length of one skillet, and thus leave it quiescent the lengthof time required for the scoring apparatus and guillotine to work.

In order to allow of different lengths of skillet, and yet have twostationary supports Q, I may arrange the roller R to act as a jockeyroller in conjunction with the two rollers V V, to carry the bandthrough a greater length of travel. In this case a vertically adjustableroller R can be arranged for skillets of different lengths so as to 111-sure the right synchronism. I may also at the end of the machine have anordinary slide and counting devices whereby the skillets are broughtdown 011 to a bed plate where they are divided up into lots of ten,twelve, twenty, or other numbers, and are ready to be packed, and sentto market in a wellknown manner. In the manufacture of match boxes therecan be gluing devices at different points, and a sanding deviceimmediately following the first of these gluing means, so that the sandsurface on the match box can be made during the trial of the machine,and of course in these match boxes as a rule cross scoring and slottingare omitted. It is evident that an ordinary wire stitching device cantake the place of a gluing arrangement, or both can be used, but Iprefer to have a gluing device, as shown.

The cutting knives can be mounted adjustably longitudinally, and thescorers and slotting device be arranged with interchangeable parts so asto increase or diminish the length of the score or the slot. Further,instead of the width of the band being only suflicient for one skilletabreast, it can be made to have three or four skillets abreast, ascoring device at G being arranged to cut the band entirely through soas to separate the skillets at this point. 7 In that case there are asmany beds I, as there are skillets abreast.

I have shown the machine driven from two shafts T and T, which aregeared together for instance by chain gearing U, but it is obvious thatthey can be driven from any other part.

I declare that what I claim is 1. In a machine for making skillets froma continuous web, the combination of two shafts mounted in fixedbearings; means for driving the shafts synchronously; an intermittentfeed device for drawing the band of skillets through the machineactuated by one of-said shafts; a'cut-ofl' device also actuated by saidshaft; a series of scoring, and slotting devices driven from the otherof said shafts; fixed guide rollers for the web; a coacting guide rollerlocated between the aforesaid guide rollers and between the scoring andslotting mechanism and the cut-ofi' mechanism and adjustabletransversely to the web; and means for fastening said adjustable rollerin various adjusted positions to correspond to different lengths ofskillet.

2. The improvement in machinery for making cartons or skillets whichconsists in the combination of a flexible bed arranged to turn over thefiat skillet into the tubular form, and a Switchback in that bed,whereby the increased length of the path of the portion of the edge ofthe skillets being turned over is compensated by the compression causedby the Switchback.

3. The improvement in machinery for making skillets, which consists of abed of leather or other flexible material, means for gradually turningthe bed and band of skillets over into the tubular form, means fordepressing the band of skillets and the bed so as to take a switchbackcourse, means for supporting them at the point where the greatestdepression takes place, and means for regulating the extent of turn-overin the bed, substantially as described.

4. In machinery for making skillets, the combination of the rollers NNand HH, with a bed I, and rods V, whereby the bed and the web thereonare obliged to take a switchback form, with the roller L and means forturning over the bed such as the rod L and adjustable guides M.

5. In machinery for making skillets, the combination of a flexiblebed'I, and pressers W with the hand devices 1, 1 1 whereby the pressersW can depress the bed with the web thereon, and be adjustable laterally,and thus give a variation in contour to the tube being formed of theband of skillets.

6. In machinery for making skillets, the combination of a flexible bedI, means for turning the same over into a tubular form, means forcontinuously drawing on the band of skillets, and the fixed arm Ksupporting an anvil block is inside the tubular portion of the skilletand immediately beyond the bed, whereby the skillet can be sawedimmediately after being turned, and while still held in the tubularform.

In witness whereof, I have hereunto signed my name this 28th day of June1912, in the presence of two subscribing witnesses.

RICHARD WALKER THOMPSON, JUNIOR.

Witnesses:

Ronnnr WM. I-Ircomson, HERBERT DINSDALE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

